Abstract
AbstractIn this work the exact data of the rate coefficients of propagation kp and termination kt, and initiator efficiency f as well as their variations with conversion during the whole processes of the polymerization of methyl methacrylate in bulk have been measured using electron paramagnetic resonance (ESR) without any assumptions and approximations. kp was calculated directly from the synchronously measured data of the concentration of radicals and polymerization rate. kt was determined under nonsteady‐state conditions by using the after‐effect technique in the ESR measurement. f for the initiation with dimethyl 2,2′‐azoisobutyrate was evaluated from the initiation and termination rates. The ESR spectra show that the polymerization system is in a micro‐heterogeneous state and there exist inactive radicals. A model of a diffusion‐controlled reaction is proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
